I want the user to insert a string as a parameter, and afterwards check if that string is equal to one of several strings.
The way I do it now is
....
if(stringParam != "text1" || stringParam != "text2" || stringParam != "text3"... stringParam != "text10")
....
is there not a way that to write this more readable / pretty? There probably is, but I couldn't figure a way.
Also it doesn't matter if the strings are uppercase or lowercase.
You can use a Hashtable, Dictionary or HashSet. You can store in it the strings as keys and then use the method ContainsKey()/Contains() to see if your stringParam matches any of the keys stored previously ("text1", "text2" and so on).
HashSet<string> mySet = new HashSet<string>();
mySet.Add("text1");
mySet.Add("text2");
mySet.Add("text3");
mySet.Add("text4");
if (mySet.Contains(stringParam))
Console.WriteLine("It matched");
HashSet<T> accept an IEqualityComparer<T>. So to accomodate for "it doesn't matter if the strings are uppercase or lowercase", One could use one of the "IgnoreCase" string comparers like for example: new HashSet<string>(StringComparer.CurrentCultureIgnoreCase).You could use regex matching with a single alternation:
Regex regex = new Regex(@"\b(?:text1|text2|text3|...|text10)\b");
string stringParam = "passes";
Match match = regex.Match(stringParam);
if (!match.Success)
{
Console.WriteLine("MATCH");
}
You could try this:
// build a string array containing what you want to match.
var myStrings = new [] { "TEXT1", "TEXT2", "TEXT3", ....... };
// search in it
if (myStrings.Contains(stringParam.ToUpper()))
{
// yes
}
You could also use a HashSet<T>.
But this 'smells' like you're doing something which could be done other ways more efficient, but there is a lack of information for us.
Like Fildor said, you might want to use this one.
// build a string array containing what you want to match.
var myStrings = new [] { "TEXT1", "TEXT2", "TEXT3", ....... };
// search in it
if (myStrings.Any(s => String.Compare(s, stringParam, CultureInfo.InvariantCulture, CompareOptions.IgnoreNonSpace))
{
// yes
}
toUpper doesn't work with turquish "i". Because the Uppercase turquish "i" is not what you get from toUpper...
myStrings.Any(s => String.Compare(s, stringParam,, CultureInfo.InvariantCulture, CompareOptions.IgnoreNonSpace))